Device for sole sewing machines



'(No Model.) E. B. ALLEN.

CHANNEL CUTTING DEVICE FOR SOLE SEWING MACHINES.

No. 398,305. Patented Feb. 19, 1889 llnrrnn gTATES ATENT OFFICE.

EDWARD B. ALLEN, OF PORTLAND, MAINE, ASSIGNOR OF ON E-HALF TO WALTER B.SAIVYER, OF SAME PLACE.

CHANNEL-CUTTING DEVICE FOR SOLE-SEWING MACHINES.

SPECIFICATION forming part of Letters Patent No. 398,305, dated February19, 1889.

Application filed November 24, 1888. Serial No. 291,794. (No model.)

f0 aZZ whont it may concern.-

Be it known that I, EDWARD B. ALLEN, of Portland, county of Cumberland,State of Maine, have invented an Improvement in Sole-Sewing Machines, ofwhich the following description, in connection with the accompanyingdrawings, is a specification, like letters on the drawings representinglike parts.

This invention has for its object to improve that class ofsewing-machines in which the work is supported upon a horn while beingstitched. In this class of machines it is a desideratum to embed thestitch in a channel at the inner face of the inner sole next the foot ofthe wearer. I have provided the horn with a channelcutter to cut achannel in the inner sole as the shoe is being stitched on the horn. Itwill be understood that the horn is rotated by hand as the sole is beingstitched or secured to the lasted upper, and that the boot or shoe isfed over the horn indifferent directions as the stitching is carriedabout the sole. The channel-cutter must always occupy a position justbehind the hole through which the fastener (herein. supposed to be astitch) passes to enter the leather to secure the sole and uppertogether; and to keep the channel-cutter in the proper position,notwithstanding the rotation of the horn, so that it will cut a groovein the material just in advance of the stitch to be made therein, I havecombined with the said channel-cutter means to rotate it as the horn isrotated, whereby the channel-cutter always presents its cuttingedgetoward the direction from which the material is being fed over the horn.

My invention consists in the combination, witha rotatinghorn, of achannel-cutter also, in the combination, with a rotating horn and achannel-cutter, of means for rotating the said channel-cutter in thehorn as the latter is rotated.

Figure 1 in section and elevation shows a sullicient portion of the hornof a solesewing machine to enable my invention to be understood; Fig. 2,an enlarged sectional detail of the upper end of the horn, showing theusual whirl and my improved channel-cutter. Figs. 3 and at show a sideview and a top view of the channel-cutter. Fig. 5 shows a piece of aboot or shoe with stitches drawn into the channeled inner sole.

The frame or stand A, the horn-shaft A, the horn A the whirl a at theapex of the horn, and the shafts a a and the gearing a a a a, to retainthe whirl in proper position with relation to the hook of the usualneedle, (not shown,) and to actuate the whirl always at the proper timeand for the proper distance in the proper direction to lay the usualthread carried by the whirl into the hook of the usual hooked needle,are all as common in the wellknown McKay sole-sewing machine, exceptthat herein the shaft a is hollow or tubular, so the said parts need notbe herein further described, in so far as they operate in well knownmanner.

I have provided the top of the horn above the usual whirl with aehannel-cutter, shown as a ring, I), provided with a blade, I),sharpened at one edge, as best shown in Fig. 4, the said ring at itsunder side having gear-teeth, as b The teeth b of the channel-cutter areengaged by the beveled teeth (see Fig. 2) at the upper end of acutter-operating shaft, 0, extended through the hollow whirl-actuatingshaft to.

The lower end of the shaft 0 has a hearing at c, and has connected to ita bevel-gear, 0 which is engaged by abevel-gear, c", on ashaft, 0 havingits bearings at c and 0 the said shaft having a bevel-gear, c, the teethof which are engaged with the teeth of a stationary bevel-gear ortoothed ring, 0", held in fixed position with relation to the horn, sothat when the horn is rotated in usual manner during the stitching ofthe material therein the channel-cutter will be rotated correspondinglyto always present the sharp edge of the blade I) in the direction fromwhich the material is approaching to be united.

I do not desire to limit my invention to the exact form of cutter shown,nor; to the exact form of devices represented by which to ro-f' tate theehannehcutter.

Fig. 5 shows the outer sole, 6, which may be of any usual kind; 6, theinner sole; 2, the channel out in the latter, and e the fasteners, shownas stitches.

ioo

I clai1n- In testimony whereof I have signed my name 1. The combination,with a rotating horn, to this specification in the presence of two sub-10 of a channel-cutter mounted in the tip of the scribing Witnesses.horn, substantially as described.

2. The combination, with a rotating horn and a channel-cutter mounted inthe tip of .Vitnesses: the horn, of gearing to rotate the said chan G'-XV. GREGORY, nel-cutter, substantially as described. J. H. CHURCHILL.

EDlVARD B. ALLEN.

